| Clue | Source | Date |
|---|---|---|
| AP physics subject? | The Washington Post Sunday | 07 Jul 2019 |
| Electricity producer, perhaps | LA Times Daily | 16 Aug 2018 |
| Electricity producer, perhaps | The Washington Post | 16 Aug 2018 |
| Electricity producer, perhaps | ||
| What the Enola Gay's bomb carried | ||
| Replacement for electricity? | ||
| Industry's new horizon. |